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This paper proposes a variation based shooting method to solve the variable time impulsive system optimization problem. For the variable time impulsive system optimization, the moments when the impulsive control happens (impulsive moments/impulsive time) are not fixed but a function of the states. Therefore, the impulsive time also needs to be optimized besides the controls. Through the study of the...
We present a tile-based GPU design which is modeled in a full system simulation platform. The full system simulation platform includes a functional Linux-based system on which the GPU is incorporated for design explorations. To accurately estimate the execution time of the application graphics software, an execution time synchronization mechanism for the virtual platform is developed. We extend the...
In this paper, a cross-layer adaptation scheme is proposed for quality of service (QoS) provision in the scalable video streaming of high definition (HD) content. The cross-layer parameters, which contain the video rate, payload length of a packet, the mode of modulation and coding scheme (MCS), can be dynamically adapted to minimize distortion of a video streaming under the given delay bound. Based...
We present an optimization architecture for a cross- layer design in wireless video transmission and investigate the multicarrier effect on wireless communication. To transmit video frames constrained by delay bound and target frame error rate (FER), we formulate an optimization problem to minimize the required resource units for a single user by adapting payload length, M-ary modulation, block size,...
In this paper we consider a digital subscriber line (DSL) system with N orthogonal narrowband tones. Each user has a limited power budget, and our goal is to determine the power allocation of each user that enables the dasiauser capacitypsila of the system to be approached. In this paper, we use dasiauser capacitypsila to denote the maximum number of users that can be supported by the system, provided...
Handover control algorithms have been designed initially to ensure a seamless migration in cellular systems. With a better understanding of wireless systems and communication channels, instead of focusing only on the seamless migration process in wireless systems, the handover control designs have been shifted to the optimization of the required resources. In this paper, we will first describe the...
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